@Walter Hinteler,
I don't believe Americans will use high speed rail to the extent that it is used in other countries.
If I'm not mistaken, the move to HSR in other countries was largely due to congestion on exisiting conventional routes. There is no such situation in the US. While there are areas of the country where local commuter rail is heavily used this just isn't the case in terms of city to city travel.
One of the "pros" touted for HSR is that you can more easily travel from city center to city center which is great if you live near the city center and have reason to travel to the center of another city.
Most of my business travel in the US doesn't involve downtown destinations. For most of my regular trips, it is far easier for me to drive to the airport, fly to an airport outside the city center, rent a car, and drive to my destination than it would be for me to drive to the city center, get on a train, travel to another city center and then find ground transportation to get to my destination outside that city center.
I have no faith that the consumer's cost for using HSR will be less then that for air transportation.
Once outside of city highway congestion, Americans either don't mind or like to drive their cars.
Even though we all know it is safer to fly than drive on the highway, a great many people prefer to drive than fly, if the travel time (including getting to and from the airport) is relatively similar.
It will only take one HSR disaster to spook the hell out of consumers.
It may make sense in some places (Perhaps San Francisco to LA) but Tampa to Orlando? That one cost us $8 billion in federal subsidies.
The RR companies will not go it alone. A lot more federal and state dollars will be spent.